Basic controller haptics (#1498)
Allows for controller haptics based on haptic events.
```cs
public static void TriggerHaptics( HapticEffect pattern, float lengthScale = 1.0f, float frequencyScale = 1.0f, float amplitudeScale = 1.0f )
```
e.g.
```cs
Input.TriggerHaptics( HapticEffect.HardImpact );
```